Screen.



G. F. GREENWELL.

SCREEN.

APPLICATION HLED MAR. 19. |918.

1,270,287. Patented June 25, l91&

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GLENN F. GREENWELL, 0F GLENDALE, KENTUCKY.

SCREEN.

Specification of Letters Patent.

Patented June 25, 1918.

Application filed March 19, 1918. Serial No. 223,400.

To all whom t ma concer/n:

Be it known t at VI, GLENN F. GREEN- WELL a citizen of the United States, residing at Glendale, in the county of Hardin and State of Kentucky, have invented certain new and ,useful Improvements in Screens, of which the followin is a specification.

My invention re ates to a screen for a window, door, or the like.

An important object of the invention is to provide apparatus of the above mentioned character, which is of simplified construction, adapted to hold a section of screen taut in close proximity to the window frame or the like and which is adjustable to take .up slack occurring in the screen.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specication and in wh1ch like numerals are employed to designate l1ke parts throughout the same,

Figure 1 is a side elevation of apparatus embodying my invention Fig.` 2 is a vertical. longitudinal transverse section taken on line 2-2 of Fig. 1, an

Fig. 3 is a similar view taken on line 3-3 of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a window frame as a whole, comprising vertical beams 6 and upperand lower horizontal beams 7 and 8.

The numeral 9 designates upper relatively stationary holding devices, each of which embodies a head 10, having oblique upper faces 11. The head 10 is carried by a screwmember 12, to enter the material of the vertical beam 6, as clearly illustrated in Fig. 2.

The numeral 13 designates lower tension regulating devices, as a whole, each of which comprises a guide frame or bracket 14, provided at its ends with extensions 15. These extensions are secured to the vertical beam 6 and lower horizontal beam 8 by screws 16 or the like, as shown. Mounted to reciprocate within each guide frame 14 is a block or member 17 having a lower oblique face 18. This block is urged downwardly by a screw or bolt 19, having screw-threaded engagement within an openin 20, formed in the upper end of the gui e frame 14, as shown.

The numeral V21 designates a section of Wire screen or mesh, disposed upon one side of the frame 5, and preferably overlapping the vertical beams 6, as indicated in Fig. 1. The ends of this wire screen 21 extend between pairs of clamping bars 22. The .clamping bars in each pair are triangular 1n cross-section, as shown. Each pair of clamping bars forms a member which is triangular in cross-section, as shown. The upper pair of clamping bars 22 are arranged within the heads 10, with the outer bar contacting with the oblique faces 11. The lower pair of clamping bars 22 are arranged within the guide frames 13, with the outer bar 22 contacting with the oblique faces 18 of the adjustable block 17.

From the foregoing description, it is obvious that the ends of the wire screen 21 are securely held or clamped between the bars 22, and by virtue of the triangular shape incross-section of these bars and the oblique faces with which they contact, there is a wedging action, serving to securely bind the ends of the wire screen between the same. By manipulation of the screws 19, the lower bars 22 are shifted downwardly placing the wire screen 21 under further tension. When the wire screen isl thus placed under further tension the wedging action of the bars 22 is increased, thereby increasing the binding action of the same with the wire screen. If desired, the inner faces of the bars 22, contacting with the ends of the wire screen 21, may be corrugated or provided with interitting elements, such as heads and recesses receivin the heads. However, the device has been ound to operate satisfactorily without the employment of such devices.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In apparatus of the character described, comprising relatively stationary holding devices arranged near one end of a window frame or the like and having oblique faces, longitudinally adjustable blocks arranged near the lower ends of the frame and having .pas

oblique faces, pairs of clamping bars coacting with the oblique faces of the holding devices and blocks with the bars in each pair being tapered in cross-section, and a section of wire screen having its end portions a-rranged between the bars in the pairs.

2.` In apparatus of the character described, relatively stationar holding devices arranged near one en of a window frame or the like and yhaving oblique outer faces, y

guide frames secured to the window frame near its opposite end and extending longitudinally thereof, longitudinally adJustable blocks arranged within the guide frames and pairs of clamping bars coacting with the ob lique faces of the holding devices and the blocks and a section of wire screen having its end portions arranged between the bars in the pairs of the same.

In testimony whereof I aix my signature in presence of two witnesses.

i GLENN F. GREENWELL.

` Witnesses:

A. L'. Cox, J. A. HOWARD. 

